A man was heard saying: 'Typical f***ing n*****s' and 'Black lives matter, my a**. F***ing n*****s' over a Chicago police radio dispatch just 12 hours after protests in the city cancelled a Trump rally on Friday.

The incident occurred at 8.30am on Saturday over a police radio frequency that covers Morgan Park and and other Far South Side neighborhoods, according to DNAinfo.

Police spokesman Anthony Guglielmi said an internal investigation has been ordered while activists call for the officer to be identified and fired.

A man was heard saying: 'Typical f***ing n*****s' and 'Black lives matter, my a**. F***ing n*****s' over a Chicago police radio dispatch just 12 hours after protests in the city cancelled a Trump rally on Friday

This weekend, thousands of protesters clashed with Donald Trump supporters, causing the presidential candidate to cancel his rally. At least six people were arrested and two officers were injured

Chicago has been rife with protests after Laquan McDonald, a 17-year-old black man, was killed by police in 2014. Pictured, protesters at the Trump rally on Friday

The exchange involving several officers started off in a friendly manner.

One woman can be heard saying, 'It's too early to be bothering you, good morning' before another cop asked, 'How many boyfriends do you have?'

She jokingly shot back: 'Why you all up in my Kool-Aid? Why you over here?'

Other muffled voices can be heard chiming in, saying, 'You can answer that again,' and 'You got busted over the air again.'

RELATED ARTICLES

Share this article

When an officer tells her to track down which radio the racial slur came from, the female officer said: 'You know, we don’t give radio numbers but I’m already hollering for my supervisor.'

A man's voice could then be heard at the end of the one-minute clip saying: 'Black lives matter, my a**. F***ing’ n*****s.'

It is unclear who made the comments and whether he is a police officer.

Spokesman Anthony Guglielmi acknowledged the 'inappropriate transmission' and said: 'The statements made are absolutely unacceptable and Superintendent [John] Escalante has ordered an immediate internal affairs investigation into this incident.

'Should the investigation reveal that a member of the police department made the statements, he will be immediately suspended and disciplinary proceedings will be launched.'

Superintendent John Escalante (pictured) has launched an internal affairs investigation to find out whether the person who made the comments is a police officer

Will Calloway, an activist who filed a Freedom of Information request with journalist Brandon Smith to release the dash cam video of 17-year-old black man Laquan McDonald's death, called for the officer to be identified.

He told the Daily Beast: 'We want to know their districts, and we are demanding that the mayor immediately fire the officers who made the comments.

'Not launch an investigation, not put them on desk duty with pay… We want these officers off the streets immediately.'

This weekend, thousands of protesters clashed with Donald Trump supporters, causing the presidential candidate to cancel his rally.

Will Calloway, an activist who requested the release of the dashcam footage showing police officers shooting Laquan McDonald (pictured) called for the immediate identification of the police officer in Sunday's dispatch reocrding

At least six people were arrested and two officers were injured.

The incident sparked a debate among politicians, who claimed Trump made statements that incited violence.

But the Republican candidate claimed his supporters were 'nice' and tweeted: 'The organized group of people, many of them thugs, who shut down our First Amendment rights in Chicago, have totally energized America!'

Chicago has witnessed a number of with protests after dashcam footage showed a white police officer Jason Van Dyke shooting 17-year-old Laquan McDonald 16 times on October 20, 2014.

The nearly seven-minute video shows McDonald, who was armed with a small knife, walking towards police cars stopped on a four-lane road.

With his hand near his left pocket, the teenager walks away from two officers who have their guns drawn.

He was reportedly told to drop the knife, but there is no sound on the video to verify the claim.

McDonald is seen spinning around and falling to the ground as Van Dyke opens fire at point-blank range.

The police officer, who initially claimed he had felt threatened, could be seen firing at point-blank range for 13 seconds as the young man lies motionless on the ground.

Van Dyke, 37, who was charged with six counts of first-degree murder more than a year after the killing, pleaded not guilty.

According to CNN, Van Dyke had a history of complaints alleging excessive force and use of a racial slur.